diff --git a/src/Guzzle/Http/Message/EntityEnclosingRequest.php b/src/Guzzle/Http/Message/EntityEnclosingRequest.php
index 46bd5153..9d3262a8 100644
--- a/src/Guzzle/Http/Message/EntityEnclosingRequest.php
+++ b/src/Guzzle/Http/Message/EntityEnclosingRequest.php
@@ -39,7 +39,6 @@ class EntityEnclosingRequest extends Request implements EntityEnclosingRequestIn
     public function __construct($method, $url, $headers = array())
     {
         $this->postFields = new QueryString();
-        $this->postFields->setPrefix('');
         parent::__construct($method, $url, $headers);
     }
 
diff --git a/src/Guzzle/Http/QueryString.php b/src/Guzzle/Http/QueryString.php
index 0b2c0431..8efbb930 100644
--- a/src/Guzzle/Http/QueryString.php
+++ b/src/Guzzle/Http/QueryString.php
@@ -24,11 +24,6 @@ class QueryString extends Collection
      */
     protected $valueSeparator = '=';
 
-    /**
-     * @var string The query string prefix
-     */
-    protected $prefix = '?';
-
     /**
      * @var bool URL encode fields and values?
      */
@@ -178,16 +173,6 @@ class QueryString extends Collection
         return $this->fieldSeparator;
     }
 
-    /**
-     * Get the query string prefix
-     *
-     * @return string
-     */
-    public function getPrefix()
-    {
-        return $this->prefix;
-    }
-
     /**
      * Get the query string value separator
      *
@@ -252,20 +237,6 @@ class QueryString extends Collection
         return $this;
     }
 
-    /**
-     * Set the query string prefix
-     *
-     * @param string $prefix Prefix to use with the query string (e.g. '?')
-     *
-     * @return QueryString
-     */
-    public function setPrefix($prefix)
-    {
-        $this->prefix = $prefix;
-
-        return $this;
-    }
-
     /**
      * Set the query string value separator
      *
diff --git a/tests/Guzzle/Tests/Http/QueryStringTest.php b/tests/Guzzle/Tests/Http/QueryStringTest.php
index 7eb2e7ef..b7e340c4 100644
--- a/tests/Guzzle/Tests/Http/QueryStringTest.php
+++ b/tests/Guzzle/Tests/Http/QueryStringTest.php
@@ -26,14 +26,6 @@ class QueryStringTest extends \Guzzle\Tests\GuzzleTestCase
         $this->assertEquals('&', $this->q->getFieldSeparator());
     }
 
-    /**
-     * @covers Guzzle\Http\QueryString::getPrefix
-     */
-    public function testGetPrefix()
-    {
-        $this->assertEquals('?', $this->q->getPrefix());
-    }
-
     /**
      * @covers Guzzle\Http\QueryString::getValueSeparator
      */
@@ -62,16 +54,6 @@ class QueryStringTest extends \Guzzle\Tests\GuzzleTestCase
         $this->assertEquals('/', $this->q->getFieldSeparator());
     }
 
-    /**
-     * @covers Guzzle\Http\QueryString::setPrefix
-     * @covers Guzzle\Http\QueryString::getPrefix
-     */
-    public function testSetPrefix()
-    {
-        $this->assertEquals($this->q, $this->q->setPrefix(''));
-        $this->assertEquals('', $this->q->getPrefix());
-    }
-
     /**
      * @covers Guzzle\Http\QueryString::setValueSeparator
      * @covers Guzzle\Http\QueryString::getValueSeparator